CN114635924B - Manufacturing method of wear-resistant bearing inner ring - Google Patents

Manufacturing method of wear-resistant bearing inner ring Download PDF

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Publication number
CN114635924B
CN114635924B CN202210438554.4A CN202210438554A CN114635924B CN 114635924 B CN114635924 B CN 114635924B CN 202210438554 A CN202210438554 A CN 202210438554A CN 114635924 B CN114635924 B CN 114635924B
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coating
parts
inner ring
wear
manufacturing
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CN114635924A (en
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孔维涛
王云龙
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Jiangsu Xigun Bearing Technology Co ltd
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Jiangsu Xigun Bearing Technology Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/62—Selection of substances
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/64—Special methods of manufacture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/008—Identification means, e.g. markings, RFID-tags; Data transfer means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/30—Coating surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/30—Coating surfaces
    • F16C2223/40—Coating surfaces by dipping in molten material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Rolling Contact Bearings (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

The invention relates to the technical field of bearing manufacturing and production, and discloses a manufacturing method of a wear-resistant bearing inner ring. According to the invention, the first coating and the second coating which can form a compact network structure are coated on the bearing inner ring, and the first coating and the second coating can be combined more tightly through the action of the coupling agent, so that the bearing inner ring is ensured to be not easy to peel off while the wear resistance is enhanced.

Description

Manufacturing method of wear-resistant bearing inner ring
Technical Field
The invention relates to the technical field of bearing manufacturing and production, in particular to a manufacturing method of a wear-resistant bearing inner ring.
Background
The bearing is an important part in modern mechanical equipment, and the main function is to support the mechanical rotating body, reduce the friction coefficient generated in the motion process of the mechanical rotating body and ensure the rotation precision of the mechanical rotating body, so that when the bearing works, the inner friction between the bearing inner ring and the rolling body, the outer friction between the bearing inner ring and other equipment and the like can ensure that the bearing inner ring is always worn, the precision stability of the bearing can be reduced, the service life of the bearing can be correspondingly short, and the use of the whole set of forming equipment can be influenced.
Disclosure of Invention
In order to improve the performances of wear resistance and the like of the bearing inner ring, the technical scheme of the invention provides a manufacturing method of the wear-resistant bearing inner ring. The technical proposal is as follows:
the invention provides a manufacturing method of an inner ring of a wear-resistant bearing, which comprises the following steps:
s1: slowly heating the inner ring blank at a heating speed of 7.2-9.17 ℃/min until the temperature of the blank reaches 165-178 ℃;
s2: oxidizing the embryo to yellow;
s3: rapidly heating the oxidized and yellow embryo to over 860 ℃, controlling the temperature between 860 and 980 ℃ and carrying out induction quenching on the embryo in a neon environment; the induction quenching adopts a mode of combining oil cooling and air cooling, cooling oil is put forward for air cooling after the oil cooling is kept for 3 to 13 seconds, the oil cooling is carried out again after the air cooling is kept for 15 to 25 seconds, and the cycle is carried out for 4 times;
s4: cleaning the blank subjected to induction quenching by adopting alkaline liquid at 30 ℃, naturally drying at the ambient temperature of 25 ℃, and repeatedly cleaning and drying for 3 times;
s5: preparing a first composition, immersing the cleaned embryo body into the first composition, and drying to obtain a first coating;
s6: preparing a second composition, uniformly coating the second composition on the surface of the first coating, and drying to obtain a second coating;
s7: and curing the first coating and the second coating.
Preferably, the components of the first composition include, in parts by weight: 5 to 15 parts of modified organic silicon resin, 5 to 10 parts of polyamide resin, 70 to 80 parts of epoxy resin, 15 to 30 parts of acetone, 0.5 to 2 parts of silane coupling agent, 5 to 10 parts of reinforcing agent and 0.5 to 1 part of curing agent.
Preferably, the modified organic silicon resin adopts one of amino epoxy group co-modified organic silicon resin and alkoxy carboxyl modified organic silicon resin.
Preferably, the reinforcing agent is one or more of metal oxide, powdered cellulose, diatomite, glass fiber and mineral powder.
Preferably, the curing agent adopts one of silicone modified phenolic resin, anhydride, amino resin, dicyandiamide and hydrazide.
Preferably, the components of the second composition include, in parts by weight: 67-80 parts of glass fiber silicone resin, 10-20 parts of toluene, 10-20 parts of tungsten carbide alloy, 1-2 parts of coupling agent and 0.5-1 part of curing agent.
Preferably, the coupling agent is one of silane coupling agent and titanate.
Preferably, the curing treatment adopts low-temperature curing in advance, the temperature is controlled between 20 and 40 ℃, and the temperature is controlled between 130 and 180 ℃ after high-temperature curing.
Preferably, the alkaline liquid in step S5 comprises 15% sodium hydroxide solution, betaine type amphoteric surfactant.
Preferably, the method further comprises step S8: and coating a marking layer on the surface of the second coating.
Compared with the prior art, the invention has the advantages that:
1) The wear resistance of the bearing inner ring can be primarily enhanced by coating the surface of the bearing inner ring with the first coating capable of forming a compact network structure, and the polyamide/organosilicon modified epoxy resin in the first coating has strong adhesive force to the metal of the bearing inner ring and is not easy to peel off; and the tungsten carbide alloy and the glass fiber silicone resin are sprayed on the first coating, so that the wear resistance of the bearing inner ring can be enhanced again, and the coupling agent in the second coating can combine the surface active groups of the first coating with the second coating, so that the two coatings are combined more tightly, and the bearing inner ring is ensured to be not easy to peel off while the wear resistance is enhanced.
2) The bearing is internally classified by coating the second coating with the identification layer, so that the problem that the bearing is possibly damaged by stress and the like caused by simply imprinting the identification steel on the bearing inner ring in the prior art can be solved, and the identification layer can be additionally coated and is easy to operate.
Detailed Description
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed.
An embodiment of the invention comprises the following steps:
slowly heating the inner ring blank of the bearing at a heating speed of 7.2-9.17 ℃/min until the temperature of the blank reaches 165-178 ℃; oxidizing the embryo to yellow; then the blank after oxidation yellowing is quickly heated to over 860 ℃, the temperature is controlled between 860 and 980 ℃, the blank is subjected to induction quenching in a neon environment in a mode of combining oil cooling and air cooling, namely cooling oil is put out for air cooling after the blank is kept in the oil cooling for 3 to 13 seconds, and the blank is subjected to oil cooling again after the blank is kept in the air cooling for 15 to 25 seconds, and is circulated for 4 times; then cleaning the embryo body with alkaline liquid at 30 ℃, naturally drying at the ambient temperature of 25 ℃, and repeatedly cleaning and drying for 3 times; the alkaline liquid may include 15% sodium hydroxide solution, betaine type amphoteric surfactant, etc.
Mixing the components in the first composition, stirring for 10-20 minutes at the speed of 350-450 r/min, uniformly stirring to obtain the first composition, soaking the embryo body cleaned by the alkaline liquid into the first composition, and drying after soaking to obtain the first coating; the first composition comprises the following components in parts by weight: 5 to 15 parts of modified organic silicon resin, 5 to 10 parts of polyamide resin, 70 to 80 parts of epoxy resin, 15 to 30 parts of acetone, 0.5 to 2 parts of silane coupling agent, 5 to 10 parts of reinforcing agent and 0.5 to 1 part of curing agent; wherein, the organic silicon resin can adopt amino epoxy group co-modified polydimethylsiloxane, alkoxy carboxyl co-modified polydimethylsiloxane and the like; the reinforcing agent can be one or more of metal oxide, powdered cellulose, diatomite, glass fiber and mineral powder; the curing agent can be one of silicone modified phenolic resin, anhydride, amino resin, dicyandiamide and hydrazide; the silane coupling agent may be KH560 or the like.
Epoxy resin is a common thermosetting resin, and the paint prepared from the epoxy resin is generally good in adhesive force, corrosion resistance and the like, but because the cured epoxy resin is high in crosslinking density, the texture is brittle, the impact resistance and other performances are poor, the performances of the organic silicon resin such as flexibility, high-temperature stability and the like are good, the active groups on the surface of the organic silicon resin modified by amino, polyether group, alkoxy, carboxyl and the like are increased, and the toughness and the adhesive force to metal of the coating can be improved by adding the modified organic silicon resin; the addition of the polyamide resin can improve the cohesiveness, toughness and surface smoothness of the epoxy resin; under the action of the silane coupling agent and the curing agent, the compatibility of the whole system can be improved; and the reinforcing agent can be tightly combined with the resin to obviously improve the mechanical properties of the first coating. Therefore, the modified organic silicon resin, the polyamide resin and the epoxy resin can be mixed to form the polyamide/organic silicon modified epoxy resin, so that the toughness of the first coating is improved, the adhesive force between the first coating and the metal of the inner ring blank of the bearing is enhanced, the peeling strength is improved, and the peeling is not easy to peel off.
Then, adding the tungsten carbide alloy in the second composition into a ball mill, wet-milling the tungsten carbide alloy into powder, mixing the powder with other components, stirring for 10-20 minutes at 400-500 rpm, uniformly stirring to obtain a second composition, uniformly coating the second composition on the surface of the first coating of the blank, and drying to obtain a second coating; wherein the second composition comprises the following components in parts by weight: 67-80 parts of glass fiber silicone resin, 10-20 parts of toluene, 10-20 parts of tungsten carbide alloy, 1-2 parts of coupling agent and 0.5-1 part of curing agent; wherein, the coupling agent can be silane coupling agent such as vinyl tributyl ketoxime silane or vinyl trichlorosilane, and also can comprise titanate coupling agent which can be used as adhesive; the curing agent can be acid anhydrides; a second coating may be obtained.
After the glass fiber silicone resin is solidified, a very firm film is formed, no bubbles or peeling exists, and the toughness is strong; the tungsten carbide alloy has better corrosion resistance and wear resistance; by coating the second coating outside the first coating, the wear resistance of the bearing inner ring is enhanced; the coupling agent can be arranged between the inorganic interface and the organic interface, so that a combination layer of an organic matrix, the coupling agent and the inorganic matrix is formed, and therefore, the surface of the second coating and the surface of the first coating can be more tightly combined under the action of the coupling agent, so that the bearing inner ring blank metal is coated with two layers of compact network-shaped film structures, and the wear resistance can be improved when the peeling strength of the bearing inner ring coating is enhanced.
Pre-curing the blank coated with the first coating and the second coating at a low temperature, controlling the temperature to be 20-40 ℃, curing at a high temperature, controlling the temperature to be 130-180 ℃, and controlling the film thickness of the first coating to be 0.08-0.12 mm; finally, a marking layer is coated on the second coating, for example, a digital mark is used for classifying the bearings in the company, and the bearing is not similar to the prior art that the direct steel seal is directly printed on the bearing inner ring to cause stress damage to the bearings, and the bearing can be also coated in a repairing way, so that the bearing is easy to operate.
Example 1
The manufacturing method of the wear-resistant bearing inner ring comprises the following steps:
slowly heating the inner ring blank of the bearing at a heating speed of 7.2 ℃/min until the temperature of the blank reaches 165 ℃; oxidizing and yellowing the embryo, and then rapidly heating the embryo to over 860 ℃ with the temperature controlled between 860 and 980 ℃; induction quenching the blank in neon environment, namely, keeping the blank in oil cooling for 3 seconds, then extracting cooling oil for air cooling, keeping the blank for 15 seconds, then carrying out oil cooling again, and circulating for 4 times; then cleaning the embryo body with alkaline liquid at 30 ℃, naturally drying at the ambient temperature of 25 ℃, and repeatedly cleaning and drying for 3 times; immersing the blank into a first composition, and drying to obtain a first coating; uniformly coating the second composition on the surface of the first coating, and drying to obtain a second coating; then, firstly curing at a low temperature of 20 ℃ and then post-curing at a high temperature of 130 ℃; and finally, coating a marking layer on the surface of the second coating, wherein the marking layer can be a differential color mark or a quantity of strip-shaped pigments.
The first composition comprises the following components in parts by weight: 5 parts of modified silicone resin, 10 parts of polyamide resin, 78.5 parts of epoxy resin, 30 parts of acetone, 0.5 part of silane coupling agent, 5 parts of reinforcing agent and 1 part of curing agent; the second composition comprises the following components in parts by weight: 70 parts of glass fiber silicone resin, 15 parts of toluene, 10 parts of tungsten carbide alloy, 1 part of coupling agent and 0.5 part of curing agent.
The detection shows that the thickness of the first coating is 0.08-0.12 mm, the thickness of the second coating is 0.1-0.15 mm, after the first coating and the second coating are sufficiently dried, the friction coefficient of the bearing inner ring is 0.25, the surface hardness reaches 3600HV, the strength exceeding the strength of the general steel coating 3200HV is also improved, and the wear resistance is also improved.
The 90 peel strength of the two-layer coating relative to each other was 900N per square centimeter.
Example 2
The manufacturing method of the wear-resistant bearing inner ring comprises the following steps:
slowly heating the inner ring blank of the bearing at the heating speed of 9.17 ℃/min until the temperature of the blank reaches 178 ℃; oxidizing and yellowing the embryo, and then rapidly heating the embryo to over 860 ℃ with the temperature controlled between 860 and 980 ℃; induction quenching the blank in neon environment, namely, keeping the blank in oil cooling for 13 seconds, then extracting cooling oil for air cooling, keeping the blank for air cooling for 25 seconds, then carrying out oil cooling again, and circulating for 4 times; then cleaning the embryo body with alkaline liquid at 30 ℃, naturally drying at the ambient temperature of 25 ℃, and repeatedly cleaning and drying for 3 times; immersing the blank into a first composition, and drying to obtain a first coating; uniformly coating the second composition on the surface of the first coating, and drying to obtain a second coating; then, curing at a low temperature of 40 ℃ and then curing at a high temperature of 180 ℃; and finally, coating a marking layer on the surface of the second coating, wherein the marking layer can be a differential color mark or a quantity of strip-shaped pigments.
The first composition comprises the following components in parts by weight: 12.5 parts of modified organic silicon resin, 5 parts of polyamide resin, 70 parts of epoxy resin, 15 parts of acetone, 2 parts of silane coupling agent, 10 parts of reinforcing agent and 0.5 part of curing agent; the second composition comprises the following components in parts by weight: 80 parts of glass fiber silicone resin, 20 parts of toluene, 20 parts of tungsten carbide alloy, 2 parts of coupling agent and 1 part of curing agent.
The detection shows that the thickness of the first coating is 0.10-0.14 mm, the thickness of the second coating is 0.09-0.14 mm, after the first coating and the second coating are sufficiently dried, the friction coefficient of the bearing inner ring is 0.28, the surface hardness reaches 3700HV, the strength exceeding that of the common steel coating 3200HV is improved, and the wear resistance is also improved.
The 90 peel strength of the two-layer coating relative to each other was 880N per square centimeter.
Example 3
The manufacturing method of the wear-resistant bearing inner ring comprises the following steps:
slowly heating the inner ring blank of the bearing at a heating speed of 8.35 ℃/min until the temperature of the blank reaches 172 ℃; oxidizing and yellowing the embryo, and then rapidly heating the embryo to over 860 ℃ with the temperature controlled between 860 and 980 ℃; induction quenching the blank in neon environment, namely, keeping the blank in oil cooling for 8 seconds, then extracting cooling oil for air cooling, keeping the blank for 20 seconds, then carrying out oil cooling again, and circulating for 4 times; then cleaning the embryo body with alkaline liquid at 30 ℃, naturally drying at the ambient temperature of 25 ℃, and repeatedly cleaning and drying for 3 times; immersing the blank into a first composition, and drying to obtain a first coating; uniformly coating the second composition on the surface of the first coating, and drying to obtain a second coating; then, firstly curing at a low temperature of 30 ℃ and then post-curing at a high temperature of 155 ℃; and finally, coating a marking layer on the surface of the second coating, wherein the marking layer can be a differential color mark or a quantity of strip-shaped pigments.
The first composition comprises the following components in parts by weight: 11.2 parts of modified organic silicon resin, 8 parts of polyamide resin, 72 parts of epoxy resin, 20 parts of acetone, 1 part of silane coupling agent, 7 parts of reinforcing agent and 0.8 part of curing agent; the second composition comprises the following components in parts by weight: 67 parts of glass fiber silicone resin, 10 parts of toluene, 15 parts of tungsten carbide alloy, 2 parts of coupling agent and 1 part of curing agent.
The detection shows that the thickness of the first coating is 0.09-0.13 mm, the thickness of the second coating is 0.08-0.13 mm, after the first coating and the second coating are sufficiently dried, the friction coefficient of the bearing inner ring is 0.26, the surface hardness reaches 3750HV, the strength exceeding that of the common steel coating 3200HV is improved, and the wear resistance is also improved.
The 90 peel strength of the bilayer coating relative to each other was 890N per square centimeter.
Example 4:
the manufacturing method of the wear-resistant bearing inner ring comprises the following steps:
slowly heating the inner ring blank of the bearing at a heating speed of 8.6 ℃/min until the temperature of the blank reaches 175 ℃; oxidizing and yellowing the embryo, and then rapidly heating the embryo to over 860 ℃ with the temperature controlled between 860 and 980 ℃; induction quenching the blank in neon environment, namely, keeping the blank in oil cooling for 10 seconds, then extracting cooling oil for air cooling, keeping the blank for 18 seconds, then carrying out oil cooling again, and circulating for 4 times; then cleaning the embryo body with alkaline liquid at 30 ℃, naturally drying at the ambient temperature of 25 ℃, and repeatedly cleaning and drying for 3 times; immersing the blank into a first composition, and drying to obtain a first coating; uniformly coating the second composition on the surface of the first coating, and drying to obtain a second coating; then, curing at a low temperature of 25 ℃ and then post-curing at a high temperature of 170 ℃; and finally, coating a marking layer on the surface of the second coating, wherein the marking layer can be a differential color mark or a quantity of strip-shaped pigments.
The first composition comprises the following components in parts by weight: 15 parts of modified silicone resin, 5 parts of polyamide resin, 73.5 parts of epoxy resin, 25 parts of acetone, 1 part of silane coupling agent, 5 parts of reinforcing agent and 0.5 part of curing agent; the second composition comprises the following components in parts by weight: 69.7 parts of glass fiber silicone resin, 13 parts of toluene, 18 parts of tungsten carbide alloy, 1.5 parts of coupling agent and 0.8 part of curing agent.
The detection shows that the thickness of the first coating is 0.08-0.11 mm, the thickness of the second coating is 0.11-0.14 mm, after the first coating and the second coating are sufficiently dried, the friction coefficient of the bearing inner ring is 0.27, the surface hardness reaches 3800HV, the strength exceeding that of the common steel coating 3200HV is also improved, and the wear resistance is also improved.
The 90 peel strength of the bilayer coating relative to each other was 910N per square centimeter.
Example 5
The manufacturing method of the wear-resistant bearing inner ring comprises the following steps:
slowly heating the inner ring blank of the bearing at a heating speed of 7.8 ℃/min until the temperature of the blank reaches 168 ℃; oxidizing and yellowing the embryo, and then rapidly heating the embryo to over 860 ℃ with the temperature controlled between 860 and 980 ℃; induction quenching the blank in neon environment, namely, keeping the blank in oil cooling for 9 seconds, then providing cooling oil for air cooling, keeping the blank for air cooling for 22 seconds, then carrying out oil cooling again, and circulating for 4 times; then cleaning the embryo body with alkaline liquid at 30 ℃, naturally drying at the ambient temperature of 25 ℃, and repeatedly cleaning and drying for 3 times; immersing the blank into a first composition, and drying to obtain a first coating; uniformly coating the second composition on the surface of the first coating, and drying to obtain a second coating; then, firstly, curing at a low temperature of 35 ℃ and then, after-curing at a high temperature of 150 ℃; and finally, coating a marking layer on the surface of the second coating, wherein the marking layer can be a differential color mark or a quantity of strip-shaped pigments.
The first composition comprises the following components in parts by weight: 8.5 parts of modified organic silicon resin, 5 parts of polyamide resin, 80 parts of epoxy resin, 28 parts of acetone, 1 part of silane coupling agent, 5 parts of reinforcing agent and 0.5 part of curing agent; the second composition comprises the following components in parts by weight: 75 parts of glass fiber silicone resin, 18 parts of toluene, 17 parts of tungsten carbide alloy, 1.8 parts of coupling agent and 0.7 part of curing agent.
The detection shows that the thickness of the first coating is 0.11-0.15 mm, the thickness of the second coating is 0.08-0.12 mm, after the first coating and the second coating are sufficiently dried, the friction coefficient of the bearing inner ring is 0.26, the surface hardness reaches 3750HV, the strength exceeding that of the common steel coating 3200HV is improved, and the wear resistance is also improved.
The 90 peel strength of the bilayer coating relative to each other was 890N per square centimeter.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to what has been described above and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (8)

1. The manufacturing method of the wear-resistant bearing inner ring is characterized by comprising the following steps of:
s1: slowly heating the inner ring blank at a heating speed of 7.2-9.17 ℃/min until the temperature of the blank reaches 165-178 ℃;
s2: oxidizing and yellowing the heated embryo;
s3: rapidly heating the oxidized and yellowing embryo to over 860 ℃, controlling the temperature between 860 and 980 ℃, and carrying out induction quenching on the embryo in a neon environment; the induction quenching adopts a mode of combining oil cooling and air cooling, cooling oil is put forward for air cooling after the oil cooling is kept for 3 to 13 seconds, the oil cooling is carried out again after the air cooling is kept for 15 to 25 seconds, and the cycle is carried out for 4 times;
s4: washing the blank body subjected to induction quenching by adopting alkaline liquid at 22-30 ℃, naturally drying at the ambient temperature of 20 ℃, and repeatedly washing and drying for 3 times;
s5: preparing a first composition, immersing the cleaned embryo body into the first composition, and drying to obtain a first coating;
s6: preparing a second composition, uniformly coating the second composition on the surface of the first coating, and drying to obtain a second coating;
s7: curing the first coating and the second coating;
the first composition comprises the following components in parts by weight: 5 to 15 parts of modified organic silicon resin, 5 to 10 parts of polyamide resin, 70 to 80 parts of epoxy resin, 15 to 30 parts of acetone, 0.5 to 2 parts of silane coupling agent, 5 to 10 parts of reinforcing agent and 0.5 to 1 part of curing agent;
the second composition comprises the following components in parts by weight: 67-80 parts of glass fiber silicone resin, 10-20 parts of toluene, 10-20 parts of tungsten carbide alloy, 1-2 parts of coupling agent and 0.5-1 part of curing agent.
2. The method for manufacturing an inner ring of a wear-resistant bearing according to claim 1, wherein the modified silicone resin is one of amino epoxy co-modified silicone resin and alkoxy carboxyl modified silicone resin.
3. The method for manufacturing an inner ring of a wear-resistant bearing according to claim 1, wherein the reinforcing agent is one or more of metal oxide, powdered cellulose, diatomaceous earth, glass fiber, and mineral powder.
4. The method for manufacturing an inner ring of a wear-resistant bearing according to claim 1, wherein the curing agent is one of silicone modified phenolic resin, acid anhydride, amino resin, dicyandiamide and hydrazide.
5. The method for manufacturing an inner ring of a wear-resistant bearing according to claim 1, wherein the coupling agent is one of a silane coupling agent and a titanate.
6. The method for manufacturing an inner ring of a wear-resistant bearing according to claim 1, wherein the curing treatment is performed by low-temperature curing in advance, the temperature is controlled to be 20-40 ℃, and the temperature is controlled to be 130-180 ℃ after high-temperature curing.
7. A method of manufacturing an inner ring of a wear bearing according to claim 1, wherein the alkaline liquid in step S5 comprises 15% sodium hydroxide solution, betaine type amphoteric surfactant.
8. The method of manufacturing a wear-resistant bearing inner ring according to claim 1, further comprising step S8: and coating a marking layer on the surface of the second coating.
CN202210438554.4A 2022-04-25 2022-04-25 Manufacturing method of wear-resistant bearing inner ring Active CN114635924B (en)

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CN1804128A (en) * 2005-11-30 2006-07-19 重庆长江轴承工业有限公司 High carbon chromium bearing parts surface chemical heat-treatment process
JP2011117489A (en) * 2009-12-01 2011-06-16 Ntn Corp High strength rolling bearing
DE102011075494A1 (en) * 2011-05-09 2012-11-15 Schaeffler Technologies AG & Co. KG Rolling bearing for axle gear box of motor car, has rolling elements that are arranged in region of rolling contact surfaces on which oxidic conversion coat is formed with alkaline or acidic brine
CN103820738A (en) * 2014-02-28 2014-05-28 江苏大学 WSe2-containing Fe-based high-temperature self-lubricating spherical plain bearing and preparation method thereof
CN104439954A (en) * 2014-11-17 2015-03-25 无锡市百顺机械厂 Bearing machining technology
CN104759845A (en) * 2015-03-20 2015-07-08 高灵军 Processing technology of bearing
CN105673706A (en) * 2016-02-23 2016-06-15 安徽省宁国顺昌机械有限公司 Wear-resistant and corrosion-resistant bearing
CN106222569A (en) * 2016-08-01 2016-12-14 宁波达尔机械科技有限公司 A kind of self-lubrication alloy high rigidity bearing
CN106837995A (en) * 2017-04-10 2017-06-13 无锡市海峰海林精工机械制造有限公司 A kind of automobile engine refractory seals bearing

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990073324A (en) * 1999-06-29 1999-10-05 손종섭 Internal/external cooling heat treatment method
CN1804128A (en) * 2005-11-30 2006-07-19 重庆长江轴承工业有限公司 High carbon chromium bearing parts surface chemical heat-treatment process
JP2011117489A (en) * 2009-12-01 2011-06-16 Ntn Corp High strength rolling bearing
DE102011075494A1 (en) * 2011-05-09 2012-11-15 Schaeffler Technologies AG & Co. KG Rolling bearing for axle gear box of motor car, has rolling elements that are arranged in region of rolling contact surfaces on which oxidic conversion coat is formed with alkaline or acidic brine
CN103820738A (en) * 2014-02-28 2014-05-28 江苏大学 WSe2-containing Fe-based high-temperature self-lubricating spherical plain bearing and preparation method thereof
CN104439954A (en) * 2014-11-17 2015-03-25 无锡市百顺机械厂 Bearing machining technology
CN104759845A (en) * 2015-03-20 2015-07-08 高灵军 Processing technology of bearing
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CN106837995A (en) * 2017-04-10 2017-06-13 无锡市海峰海林精工机械制造有限公司 A kind of automobile engine refractory seals bearing

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